cast-to-union.c revision 08a41901e18aeb91b87d031b93df70374af02564
1// RUN: %clang_cc1 -fsyntax-only -verify -pedantic %s 2 3union u { int i; }; 4void f(union u); 5 6void test(int x) { 7 f((union u)x); // expected-warning {{C99 forbids casts to union type}} 8 f((union u)&x); // expected-error {{cast to union type from type 'int *' not present in union}} 9} 10 11union u w = (union u)2; // expected-warning {{C99 forbids casts to union type}} 12union u ww = (union u)1.0; // expected-error{{cast to union type from type 'double' not present in union}} 13union u x = 7; // expected-error{{initializing 'union u' with an expression of incompatible type 'int'}} 14int i; 15union u zz = (union u)i; // expected-error{{initializer element is not a compile-time constant}} expected-warning {{C99 forbids casts to union type}} 16 17struct s {int a, b;}; 18struct s y = { 1, 5 }; 19struct s z = (struct s){ 1, 5 }; 20